YSK 05（Cat No.:I043663）is a small molecule inhibitor that targets the protein CHK1 (checkpoint kinase 1), a crucial regulator of the DNA damage response and cell cycle checkpoint control. By inhibiting CHK1, YSK 05 disrupts the cell’s ability to repair DNA damage and arrest the cell cycle, thereby sensitizing cancer cells to DNA-damaging agents such as chemotherapy and radiation. This makes YSK 05 a promising candidate for combination therapy in cancer treatment. Preclinical studies suggest that YSK 05 could enhance the efficacy of existing cancer therapies by targeting DNA damage repair pathways.